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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %






2. What about the sperm for a bull which has been castrated but still has testicles?






3. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






4. 114 days






5. Important 'landmark' during palpation






6. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






7. 30-38 hours after estrus cycle begins






8. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells






9. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






10. Milk ~305 days - dry 60 days prior to calving






11. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






12. 19-23 (21) days






13. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






14. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)






15. Animals which have only one estrous cycle (ex: dog - fox)






16. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






17. ~60 days before calving






18. Animals which have many estrous periods per year (ex: cow - sow)






19. 1-2 days






20. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






21. Urinary calculi.






22. Sperm production






23. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood






24. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.


25. Animals which have only one estrous cycle (ex: dog - fox)






26. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






27. Duct through penis that carries sperm and urine






28. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)






29. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






30. Produce testosterone. located between the seminiferous tubules






31. Look for infection - split - and rupture of the penis






32. 265-285 days






33. Failure to have one testis (gonad) to descend






34. Failure to have both testis (gonads) descend






35. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






36. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)






37. Depository for semen during insemination. where urine leaves the body






38. Milk is 15% ________ and 85% __________.






39. The more stressed out the male is - the less sperm he is going to produce






40. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off






41. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






42. 30-38 hours after estrus cycle begins






43. Help to signal hormone levels which we need both in the brain right next to each other.






44. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






45. FEED






46. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.






47. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm






48. (male) pushes the testes outward toward the legs for a cool-down off of the body






49. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






50. 147 days